SULFIDE SOLID ELECTROLYTE MATERIAL, BATTERY, AND PRODUCING METHOD FOR SULFIDE SOLID ELECTROLYTE MATERIAL
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Abstract
A sulfide solid electrolyte material with favorable ion conductivity and high reduction resistance. The object is attained by providing sulfide solid electrolyte material comprising: Li element; Ge element; P element; and S element, wherein the sulfide solid electrolyte material peaks at a position of 2θ=29.58°±0.50° in X-ray diffraction measurement using CuKα ray, the sulfide solid electrolyte material does not peak at a position of 2θ=27.33°±0.50° in X-ray diffraction measurement using CuKα ray or when diffraction intensity at the peak of 2θ=29.58°±0.50° is regarded as IA and diffraction intensity at the peak of 2θ=27.33°±0.50° is regarded as IB, a value of IB/IA is less than 1.0, and part of the P element in a crystal phase peaking at the position of 2θ=29.58°±0.50° is substituted with a B element.
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Citations
18 Claims
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1-6. -6. (canceled)
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7. A sulfide solid electrolyte material comprising:
- a Li element;
a Ge element;
a P element; and
a S element, whereinthe sulfide solid electrolyte material has a peak at a position of 2θ
=29.58°
±
0.50°
in X-ray diffraction measurement using a CuKα
ray,the sulfide solid electrolyte material does not have a peak at a position of 2θ
=27.33°
±
0.50°
in X-ray diffraction measurement using a CuKα
ray orin a case of the sulfide solid electrolyte material having a peak at the position of 2θ
=27.33°
±
0.50°
, when diffraction intensity at the peak of 2θ
=29.58°
±
0.50°
is regarded as IA and diffraction intensity at the peak of 2θ
=27.33°
±
0.50°
is regarded as IB, a value of IB/IA is less than 0.50, anda part of the P element in a crystal phase having the peak at the position of 2θ
=29.58°
±
0.50°
is substituted with a B element. - View Dependent Claims (11, 15)
- a Li element;
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8. A sulfide solid electrolyte material comprising:
- a Li element;
a Ge element;
a B element; and
a S element, whereinthe sulfide solid electrolyte material has a peak at a position of 2θ
=29.58°
±
0.50°
in X-ray diffraction measurement using a CuKα
ray,the sulfide solid electrolyte material does not have a peak at a position of 2θ
=27.33°
±
0.50°
in X-ray diffraction measurement using a CuKα
ray orin a case of the sulfide solid electrolyte material having a peak at the position of 2θ
=27.33°
±
0.50°
, when diffraction intensity at the peak of 2θ
=29.58°
±
0.50°
is regarded as IA and diffraction intensity at the peak of 2θ
=27.33°
±
0.50°
is regarded as IB, a value of IB/IA is less than 0.50, anda crystal phase having the peak at the position of 2θ
=29.58°
±
0.50°
does not contain a P element, and the B element is located at a site for the P element in a crystal structure of Li10GeP2S12. - View Dependent Claims (12, 16)
- a Li element;
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9. A sulfide solid electrolyte material having an octahedron O composed of a Li element and a S element, a tetrahedron T1 composed of an Ma element and a S element, and a tetrahedron T2 composed of an Mb element and a S element, the tetrahedron T1 and the octahedron O sharing an edge, and the tetrahedron T2 and the octahedron O containing a crystal structure sharing a corner as a main body, wherein
the Ma element contains a Ge element and a P element, the Mb element contains a P element, and a part of the P element is substituted with a B element.
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10. A sulfide solid electrolyte material having an octahedron O composed of a Li element and a S element, a tetrahedron T1 composed of an Ma element and a S element, and a tetrahedron T2 composed of an Mb element and a S element, the tetrahedron T1 and the octahedron O sharing an edge, and the tetrahedron T2 and the octahedron O containing a crystal structure sharing a corner as a main body, wherein
the Ma element contains a Ge element and a B element, the Mb element contains a B element, and the crystal structure does not contain a P element and the B element is located at a site for the P element in a crystal structure of Li10GeP2S12.
Specification